feat(settings): 轻应用登录参数与界面模式管理员默认

- 登录时从路由参数 yUserId/access_token 获取并存入 userInfo
- 轻应用管理页路由参数新增 userName/gateDepartName/typeName 选项
- 添加系统默认界面模式设置（管理员可指定全量/简洁）
- useLayoutMode hook 支持优先级：用户自选 > 管理员默认 > 会话级

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

frontend-web/src/core/system-settings/api.ts

@@ -137,17 +137,20 @@ export async function updatePublishSquares(
 
 export type ThemeMode = "light" | "dark" | "lightblue";
 export type ViewMode = "card" | "list";
+export type LayoutMode = "full" | "compact";
 
 export interface AppearanceSettings {
   default_theme: ThemeMode;
   default_skill_view: ViewMode;
   default_agent_view: ViewMode;
+  default_layout_mode: LayoutMode;
 }
 
 export interface AppearanceUpdate {
   default_theme?: ThemeMode;
   default_skill_view?: ViewMode;
   default_agent_view?: ViewMode;
+  default_layout_mode?: LayoutMode;
 }
 
 export async function loadAppearanceSettings(): Promise<AppearanceSettings> {